I'm a bit disgusted by your OP. To brand a city's population as Cunts because you felt that you were hard done by makes you something of a cunt youirself.
When I was 38 weeks pregnant with our youngest, I bought too much shopping and tried, like the stubborn bitch brave tropper I am, to carry it all home (No taxi money left and no mobile at the time to call for help.)
I got a little way along and my leg gave in from under me. i fell in a heap on the pavement and loads of people just walked past me. I couldn't get up and people were averting thier eyes left and right, even though I tried to ask for help (Which you should have done if you thought you were in need of it, by the way!).
I finally got a nice man to lend me his mobile to call my Aunt fora lift and all was well.
My point is though, why did you not ask for help?! I'm assuming it's not because they were strangers or you wouldn't be so livid about no-one approaching you. So what was it that stopped you asking for help?
In general though, I find that most people ARE reluctant to help others because they worry about the personal consequences for thier charity. For all they know it could be a ruse.
I don't think that, as some think, it depends on the situation if you'd help or not. If you;re going to help, you will. It's an instinctive reaction that doesn't really requires much thought and, to be honest, if you're going to take the time to think you'd probably be too late to help anyway, in a serious situation.
I've never been in the position to say if I'd help someone or not but I'd like to think that my instincts would be to help.